Question

If an exterior angle of a triangle is 130° and one of the interior opposite angle is 60°. Find the other interior opposite angle.

Answer 1

70°

Explanation:

the exterior angle of a triangle is equal to the sum of the two interior opposite angles

given that the exterior angle is 130° and one interior opposite angle is 60°

let the other interior opposite angle be x , then

x + 60° = 130° ( subtract 60° from both sides )

x = 70°

the other interior opposite angle is 70°